EP2469573A2 - Dispositif de déclenchement de disjoncteur - Google Patents
Dispositif de déclenchement de disjoncteur Download PDFInfo
- Publication number
- EP2469573A2 EP2469573A2 EP11193744A EP11193744A EP2469573A2 EP 2469573 A2 EP2469573 A2 EP 2469573A2 EP 11193744 A EP11193744 A EP 11193744A EP 11193744 A EP11193744 A EP 11193744A EP 2469573 A2 EP2469573 A2 EP 2469573A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- trip
- circuit breaker
- voltage
- trip device
- parallel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
Definitions
- the teachings in accordance with the exemplary embodiments of this present disclosure generally relate to a trip device, and more particularly to a trip device for use in a circuit breaker.
- circuit breakers are used to protect electrical circuitry from damage due to an over-current condition, such as an overload condition or a relatively high level short circuit or fault condition by automatically interrupting the circuitry.
- the circuit breaker may be largely categorized into three types, based on trip method, that is, a bimetal type which carries out a trip operation by being heated and bent in response to a persistent over-current condition, an electromagnetic field type which operates by sucking a core in response to an electromagnetic field formed on a coil when an over-current flows, and an electronic type which adopts an electronic trip device and a microprocessor.
- the electronic trip device is advantageous in that it is not affected by ambient temperatures and little characteristic differences exist among products to provide a frequency characteristic that cannot be embodied by other types of trip devices, such that demands on electronic trip devices increase for important and high-end facilities
- auxiliary trip systems can be used in several ways, but are typically used to trip a breaker more rapidly than a primary trip device of the breaker.
- the most frequently used auxiliary systems include an under-voltage trip device (UVT) and a remotely switchable trip auxiliary device (hereinafter referred to as remote trip device).
- UVT under-voltage trip device
- remote trip device remotely switchable trip auxiliary device
- the UVT is an auxiliary trip system that detects under-voltage on a circuit if voltage lower than rated voltage is applied to the circuit, thereby automatically tripping the circuit breaker for protecting the circuit. That is, the UVT trips a circuit breaker when a load or a voltage on a line drops by 20% ⁇ 70% below a reference voltage or when there occurs a blackout to prevent damage to the load or to the line from over-current during return to original voltage.
- the UVT includes therein a trip coil and electronic circuit.
- the remote trip device is an auxiliary trip system capable of performing a remotely switchable trip function when a circuit breaker needs an emergent trip function due to abnormalcy on a load or on a line.
- the remote trip device includes therein a trip coil.
- FIG.1 is a schematic view illustrating a coupled structure of an auxiliary device to a circuit breaker according to prior art.
- auxiliary device (120) such as an UVT or a remote trip device
- a user must open an auxiliary cover (110) rotatably mounted on a breaker cover (100) and personally mount the auxiliary device (120) to the circuit breaker.
- auxiliary cover (110) when a user first unscrews a bolt (130) fastened to a side of the auxiliary cover (110) using a screw driver and rotates the auxiliary cover to one direction, the auxiliary cover (110) is opened as one side of the auxiliary cover (110) is hinged to the cover (100), as shown in FIG.1 .
- a pair of fastening grooves (140) is formed respectively on right and left upper sides of the cover (100) to allow a standardized size of auxiliary device (120) to be inserted, where the user inserts and couples the auxiliary device to the grooves (140).
- the conventional circuit breaker thus configured is disadvantageous in that both the UVT and the remote trip device as auxiliary devices must be equipped to detect an under-voltage on a circuit if a voltage lower than a rated voltage is applied to the circuit and to remotely trip a remote accident.
- the present disclosure has been made to solve the foregoing disadvantages of the prior art and therefore an object of certain embodiments of the present disclosure is to provide a trip device of circuit breaker capable of performing both functions of an under-voltage trip device (UVT) and a remote trip device.
- UVT under-voltage trip device
- An object of the invention is to solve at least one or more of the above problems and/or disadvantages in whole or in part and to provide at least advantages described hereinafter.
- a trip device of a circuit breaker comprising: a rectifying unit converting an AC (Alternating Current) voltage applied to the circuit breaker to a DC (Direct Current) voltage; a smoothing unit connected to the rectifying unit in parallel to mitigate ripples of the converted DC voltage; and a trip coil connected to the smoothing unit in parallel to determine whether to trip the circuit breaker.
- AC Alternating Current
- DC Direct Current
- the trip device further comprises a switching element connected to the trip coil in parallel to be turned on in response to an external control signal.
- the external control signal is an interruption signal inputted through a user interface.
- the trip coil trips the circuit breaker.
- the trip coil trips the circuit breaker if an applied voltage is less than a reference voltage.
- the rectifying unit includes bridge diodes.
- the smoothing unit includes at least one or more parallel-connected capacitors.
- the trip device of a circuit breaker can advantageously perform both the remotely switchable trip function and the under-voltage trip function by using one auxiliary device to dispense with separate purchase and/or installation of the under-voltage trip device (UVT) and the remote trip device, thereby simplifying a circuit structure, reducing a manufacturing cost, an installation space and a user inconvenience.
- first, second, third etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present inventive concept.
- exemplary is merely meant to mean an example, rather than the best. It is also to be appreciated that features, layers and/or elements depicted herein are illustrated with particular dimensions and/or orientations relative to one another for purposes of simplicity and ease of understanding, and that the actual dimensions and/or orientations may differ substantially from that illustrated. As may be used herein, the terms “substantially” and “approximately” provide an industry-accepted tolerance for its corresponding term and/or relativity between items.
- FIG.2 is a schematic structural diagram illustrating a trip device of a circuit breaker according to an exemplary embodiment of the present disclosure, where configuration of the trip device capable of performing both the remotely switchable trip function and the under-voltage trip function according to the present disclosure is shown.
- a trip device includes a rectifying unit (200), a smoothing unit (210), a trip coil (220) and a switching element (230).
- the rectifying unit (200) converts an AC (Alternating Current) voltage applied to the circuit breaker to a DC (Direct Current) voltage and the smoothing unit (210) is connected to the rectifying unit (200) in parallel to mitigate ripples of the converted DC voltage.
- the rectifying unit (200) includes bridge diodes (D1, D2, D3 and D4) and the smoothing unit (210) includes at least one or more parallel-connected capacitors (C).
- the trip coil (220) is connected to the smoothing unit (210) in parallel.
- the trip coil (220) receives the DC-converted voltage through the rectifying unit (200) and the smoothing unit (210) when the switching element (230) connected to the trip coil (220) in parallel is turned off. Meanwhile, a current flowing to the trip coil (220) is interrupted if the switching element (230) is turned on because the current flows to the ground through the switching element (230).
- the trip coil (220) trips the circuit breaker if the current is interrupted to make an applied voltage null or the voltage is less than a reference voltage.
- the trip device thus configured according to the exemplary embodiment of the present disclosure will be described in detail that operates both as an under-voltage trip device (UVT) and a remote trip device in a state of the switching element (230) being turned on and turned off.
- UVT under-voltage trip device
- a remote trip device in a state of the switching element (230) being turned on and turned off.
- an over-current over an established current may enter a sub load if a voltage on the main line goes down below a reference voltage, and in this case, if the over-current instantaneously enters the sub load, the sub load may be damaged, such that the under-voltage trip device (UVT) trips the circuit breaker during the voltage drop.
- UVT under-voltage trip device
- the trip device receives voltages (INT1 and INT2) of a main line in order to perform the under-voltage trip function. If the applied voltages are AC voltages, the AC voltages are converted to DC voltages through the rectifying unit (200) including the bridge diodes (D1, D2, D3 and D4) and the smoothing unit (210) including the capacitor (C).
- the trip device of a circuit breaker can prevent a load from being damaged due to insufficient voltage, because the insufficient voltage can be detected to allow tripping the circuit breaker.
- a remote trip device installed for remotely tripping a circuit breaker when necessary rapidly interrupts a line (load) if an accident occurs on the line.
- the switching element (230) turned on in response to an external control signal is connected to the trip coil (220) in parallel in the trip device of a circuit breaker according to an exemplary embodiment of the present disclosure, where the external control signal means an interrupting signal arbitrarily inputted by a user through a user interface (not shown) for swiftly interrupting a line when an accident is remotely generated on the line.
- the switching element (230) If the external control signal is inputted, the switching element (230) is turned on and a current flows to the ground through the switching element (230) to interrupt a current flowing to the trip coil (220).
- the trip coil (220) trips the circuit breaker by the current interruption, whereby the trip device according to the present disclosure can perform the function of tripping the circuit breaker on the accident happening in the remote place.
- the trip device of a circuit breaker has an industrial applicability in that it can advantageously perform both the remotely switchable trip function and the under-voltage trip function by using one auxiliary device to dispense with separate purchase and/or installation of the under-voltage trip device (UVT) and the remote trip device, thereby simplifying a circuit structure, reducing a manufacturing cost, an installation space and a user inconvenience.
- UVT under-voltage trip device
Landscapes
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Rectifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100133123A KR20120071537A (ko) | 2010-12-23 | 2010-12-23 | 배선용 차단기의 트립 장치 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2469573A2 true EP2469573A2 (fr) | 2012-06-27 |
EP2469573A3 EP2469573A3 (fr) | 2014-01-22 |
EP2469573B1 EP2469573B1 (fr) | 2018-03-21 |
Family
ID=45218557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11193744.7A Not-in-force EP2469573B1 (fr) | 2010-12-23 | 2011-12-15 | Dispositif de déclenchement de disjoncteur |
Country Status (6)
Country | Link |
---|---|
US (1) | US8649132B2 (fr) |
EP (1) | EP2469573B1 (fr) |
JP (1) | JP5358659B2 (fr) |
KR (1) | KR20120071537A (fr) |
CN (1) | CN102568962B (fr) |
ES (1) | ES2666590T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3031253A1 (fr) * | 2014-12-30 | 2016-07-01 | Schneider Electric Ind Sas | Dispositif d'alimentation capacitive pour dispositif de commande d'appareil de coupure electrique |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014204484A (ja) | 2013-04-01 | 2014-10-27 | パナソニック株式会社 | 系統保護装置、電路切替装置、および電力供給システム |
US20230129683A1 (en) * | 2021-10-23 | 2023-04-27 | Benjamin G. Stroyer | Circuit breaker trip device |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4425596A (en) * | 1980-09-26 | 1984-01-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Electric circuit breaker |
JPH082918Y2 (ja) * | 1987-09-14 | 1996-01-29 | 三菱電機株式会社 | しゃ断器の不足電圧引はずし制御装置 |
US4786885A (en) * | 1987-12-16 | 1988-11-22 | General Electric Company | Molded case circuit breaker shunt trip unit |
US4788621A (en) * | 1987-12-16 | 1988-11-29 | General Electric Company | Molded case circuit breaker multiple accessory unit |
JPH0677140A (ja) | 1992-05-14 | 1994-03-18 | Mitsubishi Electric Corp | 気相結晶成長装置 |
JPH06139914A (ja) | 1992-10-28 | 1994-05-20 | Fuji Electric Co Ltd | しゃ断器の不足電圧引き外し装置および電圧引き外し装置 |
JP2600846Y2 (ja) * | 1993-04-07 | 1999-10-25 | 株式会社東海理化電機製作所 | 自己保持回路 |
JPH09213196A (ja) | 1996-02-05 | 1997-08-15 | Fuji Electric Co Ltd | 漏電遮断器 |
CN2407490Y (zh) * | 1999-12-09 | 2000-11-22 | 北京开关厂 | 欠电压脱扣器 |
FR2826197B1 (fr) * | 2001-06-19 | 2003-08-15 | Schneider Electric Ind Sa | Declencheur electronique comportant un condensateur d'alimentation d'une bobine de declenchement |
CN2709984Y (zh) * | 2004-06-17 | 2005-07-13 | 林兴科 | 电能表保护开关 |
US20090237187A1 (en) * | 2006-09-21 | 2009-09-24 | Daniel Gawendowicz | Auxiliary release for a circuit breaker |
-
2010
- 2010-12-23 KR KR1020100133123A patent/KR20120071537A/ko active Search and Examination
-
2011
- 2011-12-13 US US13/324,975 patent/US8649132B2/en not_active Expired - Fee Related
- 2011-12-15 ES ES11193744.7T patent/ES2666590T3/es active Active
- 2011-12-15 EP EP11193744.7A patent/EP2469573B1/fr not_active Not-in-force
- 2011-12-22 JP JP2011281441A patent/JP5358659B2/ja not_active Expired - Fee Related
- 2011-12-23 CN CN201110459079.0A patent/CN102568962B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3031253A1 (fr) * | 2014-12-30 | 2016-07-01 | Schneider Electric Ind Sas | Dispositif d'alimentation capacitive pour dispositif de commande d'appareil de coupure electrique |
CN105743364A (zh) * | 2014-12-30 | 2016-07-06 | 施耐德电器工业公司 | 用于电切换装置的控制设备的电容性电源设备 |
EP3041102A1 (fr) * | 2014-12-30 | 2016-07-06 | Schneider Electric Industries SAS | Dispositif d'alimentation capacitive pour dispositif de commande d'appareil de coupure électrique |
US9673726B2 (en) | 2014-12-30 | 2017-06-06 | Schneider Electric Industries Sas | Capacitive power supply device for a control device of an electrical switching apparatus |
CN105743364B (zh) * | 2014-12-30 | 2020-04-10 | 施耐德电器工业公司 | 用于电切换装置的控制设备的电容性电源设备 |
Also Published As
Publication number | Publication date |
---|---|
ES2666590T3 (es) | 2018-05-07 |
US20120162844A1 (en) | 2012-06-28 |
EP2469573B1 (fr) | 2018-03-21 |
EP2469573A3 (fr) | 2014-01-22 |
JP2012134152A (ja) | 2012-07-12 |
CN102568962A (zh) | 2012-07-11 |
US8649132B2 (en) | 2014-02-11 |
CN102568962B (zh) | 2015-04-29 |
JP5358659B2 (ja) | 2013-12-04 |
KR20120071537A (ko) | 2012-07-03 |
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